20 Most Recent 2003 Chevrolet Suburban 1500 - Page 3 Questions & Answers

Have you looked at fuel pump and fuel filter? Turn key to first position and have someone near fuel tank. They should hear the pump cycle.

two screws on arm rest

Ticking noises from an engine, even an SBC, are never normal, Richard. You may be hearing lifter noise (one bad lifter) or excessive valve lash, or both... or you MAY be hearing a small exhaust leak from one manifold. If the pistons you put in aren't a really good match for the cylinders, you may be hearing "skirt slap", which will devolve into a really bad situation later down the line when the piston skirts break off. You may possibly be hearing bearing rap from either rod bearings or main bearings, if they were a little too loose, or timing chain slap if the tensioner isn't working right, or looseness in the distributor drive, or even spark snap between a plug cable and the block or head.

Vacuum issue, either a leak or a problem with the vacuum solenoid.

I think it's on top of the instrument panel. If you need further help, I’m available over the phone at https://www.6ya.com/expert/michael_2496c4f07ad24453

you have to unscrew door pull and all on inside panel , take off panel , relocate track and reinstall .

More that likely it needs a tune up. I replaced the spark plugs, spark plug wires and fuel filter on mine and it ran like new. The fuel filter is found under the car mounted to the frame near the drivers door, but you need a special tool to remove it.